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Finding the Fourth Proportional to 53,321.88, 73,584.78 and 30,672.12

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Solution

The fourth proportional to 53,321.88, 73,584.78 and 30,672.12 is: 42,327.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,321.88 : 73,584.78 = 30,672.12 : x
  2. Step 2: Convert to fraction form
    53,321.88/73,584.78 = 30,672.12/x
  3. Step 3: Cross multiply
    53,321.88x = 73,584.78 × 30,672.12
  4. Step 4: Simplify right side
    53,321.88x = 2,257,001,202.33
  5. Step 5: Solve for x
    x = 2,257,001,202.33/53,321.88
  6. Step 6: Final answer
    x = 42,327.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.